Improved ice-cream freesbr



Laag Pawn: Nd. s3,2e5, dass october 2o, 186s.

IMPROVE!) ICE-CREAM FREZER.

The .i

Toallohom it may concern:

Beit known thatl, J Miss DooLiNG, of Boston, in

the county of Suii'ollg'and State of Massachusetts, have invented a new and useful Improvement in Machines for Freezing Ice-Cream; and I do hereby declare the following to be a full, clear, and exact description ofthe same, reference being4 vhad to the accompanying drawings, making a part `of this specification, in which- Figuie 1 is a plan of my machine, adapted to operate four cream-holders.

Figure 2 is a sectional elevation oi the same, show- .ing the icenk and one cream-holder in sectioinit-he cutting-planebcingfon-line a: z 4on lig. 1.v

Figure i3 is-anend elevation. i Figure 4 is a horizontal section through ice-tank and one cream-holder, showing one other cream-holder in plan, the other two being removed; 1

Figure 5 is a plan of the device ihr lockingtne lower train o f gearing when the clutch is thrown out of gear. Figure 6 is an elevation of the same device.

The subject-matter of my inventionrelates, in the first place, to the arrangement of the mechanism by which the cream-holders and beaters are opeiated, and i consists in arranging the machinery for operatingthe creaimholders and beaters on a'frame separate from said cream-holders, ortlie icetank,in which they are enclosed, in such a manner that it may readily be connected to or disconnected from the cream-holders and beaters, at the will of the operator, by the'action of :y the lever and lifting-yoke upon the sleeve-shaas and spindles, as willbe more liully described.V

Italso consists in the use, in combination with the central upright shatt of the machine, of two distinct and separate trains of gearing, so arran Aed that either i or both may be coupled to the said sh, `hyhmeans of suitable clutches arranged to slide upon a spline in said shaft, for the purpose oi' transmitting the motion of the said shaft toeither tli'e beaters or creaimholders, o1 to both, at the same time, and causing them to revolve in opposite directions, as will be described; and also in the manner of connecting the said trains of gears to the `sleeve--slilidts and spindles, so that Iwhile the gears will impart rotary motionto said sleeve-shaits and spindles,

, the said shaits are ree to move up or down in the direction of their length, for the purpose of coupling to or uncoupling fiom the cream-holders or beaters.

' And it also consists in the combination, witheach train of gearing for transmitting motion from the ceny ,trai vertical driving-shaft to the cream-holders and beaters, of a locking-device, for holding saidv trains of gearing in a state of restA when not connected to the central vertical driving-shatt by its clutch, and thereby preventing either the cream-holders or beaters from being a'ected by the -motion of the other when it is desirable to have either remain in a state f rest.

to than Patent and making pnt of the same -car- My invention relates, in the second place, to the constructionof the ice-tank, and consists,

First, in constructing the interior of die ice-tank so as to conform in shape, as near as may be,'to the lex-A terior of the several cream-holders to be used therein, leaving only so much space between the interior of the ice-tank and the exterior ofthe cream-holders as is necessary to contain the requisite amount of the freez v ing mixture, by means of which a great saving in the amount of ice and Vsalt used may be made. It also consists,

Secondly, in mounting the ice-tank upon a carriage fitted to run upon a track below the driving-mechanism, by means of which the tank may be more readily moved to and from' said mechanism, for the purpose of removing the cream from the cream-holders when frozen, and filling them for another operation: audit consists,

Th"d1y, in the use of suitable guides and lockingmechanism, in lcombination with the tank, by whicn thetank and cream-holders are guided into positloh to connect with the driving-mechauism, and secured when in operation.

lMy invention relates, 1n the third place, to the conlstruotion ot' the beaters, and consists in the use of a knife, working near the side walls of the creamholder,

i`o}` the purpose of cutting the cream from the walls, and throwing it towards the centre, and also in the curved form of the horizontal beater-arms, in combination with the knife, by which the lniife is made to out at a considerable distance in advance of the arms as they are carried through the cream; and also in the use ofthe curved central beaters, for beating up the cream and throwing it outward after it is cut from the walls of the cream-holder by the knife, as will be described hereafter.

The same letters refer to the same parts lin all the drawings..Y v

In theA drawings, A A are the side ames or une. machine, bolted firmly to the floor, and provided with hearings at their upper ends for the horizontal shaft B, and tied together by the girts O and D, on-

which the mechanism for operating the cream-holders and beaters is mounted. f

The horizontal driving-shalt B carries a oevei-wheel, E, gearing with the bevel-wheel F, which is keyed irmly to the shaft G, and by which it is made to revolve.l

His a spur-gear, fitted to the shaft G so as to re. vnlve frs-,ely upon it, and provided with a long hub, upon which is turned a healing, by which it is tted to the box D' 'on the girt D. Said hub is alsoprovided with a clutch, by means of which, and the movable clutch I sliding upon a spline in the shaft G, and

the shipper J, the gear may be made to revolve with the shaft G, and, through the gearsU U and R B,

transmit the motion of said shaft G to the spindles S S, and through them to the beaters, when the creamhclders and beaters are coupled to the driving-mechan-- ism. To the lower end ofthe sha; G is also tted, in the same manner, the spur-gear K, and mounted with the shaft G when thrown into` gear, and, through its train of gearing, cause the sleeve-shaits O 0, which connect to the cream-holders, to revolve, and thus give motion to the cream-holders. The gears N N are provided with long hubs, by means of which they-are mounted in bearings in the girt C, 'andiitted to theA sleeve-shafts 0 O with a spline, in such a manner that,

while the vgear 4and sleeve-shaft arevn'gidly connected, so far as revolution is concerned, the sleeve-shaft is freeto be moved up or down-in the direction of its length, for the purpose of connecting to or disconnecting from the cream-holders. The upper vends of. the sleeve-shafts O Q are provided with' grooves t t, into which are fitted the forked ends of the lifting-yokes `o r bars P P, to the middle'bf which one end of the lever Q is attached by the link l,`by means of which arrangement the sleeve-shafts 0 O are raised, and, by their action upon the collars or lshoulders s s formed on the spindles S S, the spindles S` S are also raised, and the machine is uncoupled from the cream-holders and beaters.

Although-I have4 adopted the plan of lifting two sleeve-shafts and their accompanying spindlesl with one lifting-bar, I do not wish to be understood as 00niining myself to that particular mode of construction, for it is evident that each sleeve-shalt and its accompanying spindle may be raised separately, or they may:

all be raised together, if it is desirable in anypartcular cese, without at all aiiecting the principle of operation` Y The gearsRR arealsomountedin sinthe girt D, in the same manner vas the gears N are mounted in the gut C, and they are also iittedto the shatts or spindles S Swith a spline, so that, while thegear. and spindle must revolve together if at all, the spindle is free to 'be moved up and down for the pur-J pose of coupling with or uncoupling from the beaters.

The lower ends of the sleeve-shafts O O, and the enirai spindles S S, are provided with rectangular sockets,

. by which they are coupled to the cream-holders and the beaters, the sleeve-sham O O coupling with thehubs on the covers of the cream-holders, said covers being made fastto the body of the cream-holders in such a manner that the cream-holders and covers must revolve together, while the central spindle S is coupled with the beater-shaft.

T is the locking-pin, having abearlng in the 4glr't 1),:

and acted upon by the shipper J in such a manner that when the shipper-handle is raised, and the clutch acted o enter a hole provided for the purpose in ne of the gears R, and eiectnally locks the whole-train of gears connected with the spindles, and thusholds the beaters stationary, while thel cream-holders continue to re'- volve.

T' is a locln'ng-pin, having a bearing in the girt C, and connected by the lever 'v to the shipper M, in such a mann'er that when the shipper is operated to throw the clutch L out of gear with the clutch on the hub of the gear K, the pin T' shall be made to entera hole provided for the purpose in the gear K, and lock it so that it cannot be turned by the friction of the parts. y U U are two intermediate gears, used to change the motion, so as to cause the beaters to revolve in a direction contrary to that ofthe cream-holders.

V is the ioetank, m ade to accommodate four creamholders, and having its cornersiand other parts lled in, asshown at p, and' made somewhat smaller in diameter at the bottom than at the top, for the purpose 'of reducing the space to be packed with ice and salt, to theminimum quantity-consistent :with obtaining a good result in freezingr .The iceftank V is lsoprovided'with acover,j, made in threeparts, and 'made fast to the iceand, to; each other, by means of suitable hooks/ as shown a n n. i l

WW are the trudks on whichtheice-tankismounted,l and by means of which it-is readily moved to or from the machine on the railsX X,

' 'Y is the bolt, by meansvof which the tank is held in position, and w is a drain-cock to drawolf the brine. 1

Z Z are the guides, by which the-tank isguided to position' when being moved under the machine.

a is the cream-holder, b, the cover, i tted to the cream-holder in the usual way, p'rbvide'dwith along' hub, projecting upward through the cover j of the ica.v tank, and having aportionofitsnpperpartmade squnn f as shown at w, in iig. 4, tciit the socket in the lower en of the leeve-shait, by means of :which it is coupled to is the ma ef the bester, nso basing as cppervend squared, to t the socket inthe lower end of the spindles.

d darehoxixontal arms put ,through the shaft c, ath right angles .to it, and bent somewhat in the form of ont m the walls of the cream-holder by the )miscraper and throwin it from the centre again.

i i are-the steps, wh ch serve for the' lower bearings of the cream-holders, vthe upper bearings being in the cover to the ice-tank. The beatexsshas are stepped in the bottoms of the cream-holders, and have their upper bearings in the hubs of the cream-holder wvers, in the usual manner.

The operation of my machine is as follows: l The cream-holders being placed in position in the ice-tank, and packed with the freezing-mixture, of ice and sait the cream-holders are lled, and the covers put on .t e cream-holders and the ice-tankl and sec whenthe tank is moved on the track till nhehubs the cream-holders are directly under. the ehehe of the machine when the locking-bolt Y isv operated to 1on1: the ani in position. 'rhs hannes of che levers Q are then raised and at the same time a sli ht rotary motion is given the mainshait, which sleeve-shafts and the spindlesrto fall till'the sockets in their lower ends embracetheupper ends of the hubs on the cream-holdercovers and the beatershafts, when the connection is complete, and the machine is ready for operation.

g During the rst part ot' the operation of iieezing, while the cream is comparatively wenn, to prevent the cream from buttering, as wmildbe the case if the beaters were .operated at the same time with the cream-holders, theupper clutch, I, is' thrown ont of thcrcam the lrposeofbeating up the cream after it hes beenv ows the i so that. its handle shalll rest l when the ice-tank, containing the creamholdels, may

with the clutch on the hub of the gear H, which immediately sets the beaters in motion in a-direction contx-'ary-'to that of the cream-holders.

At the proper stage in the operation, the lower clutch .L is thrown out of gear, without stoppingl the machine, when 4the creamrholders will be held stationary, while the beaters contine to reyolveuntil the cream is frozen sufficient-ly to be removed from the cream-holders. y

The handles of the levers Q are then depressed, and thecomiection between the driving-mechanism and t-ll'e cream-holders and beaters isv4 broken.

Thebolt "Y is then lifted, g'ii'ing it a. quarter turn, on Ithe top of the lug m.,

be moved fioln under the driving-mechanism, along the track provided for the purpose, to the desired position,

when the contents of the' cream-lioldersmay be remove/l and the cream-holders refilled, ready for a repetition of cream-holders and beaters to the operative medianism, and nncoupling the same', by giving to the sleeveshnfts() O and the's'pindles S S, a rert-icalmotion up or down, by means of. the liiiting-bar P and the levers Q, or their equivalents, substentially as described.

2. The, within-described arrangement of mechanism, or its mechanicalequivalent, for controling the operation of the c1'cani-liolde rs and beaters, so that the cream-holders muy-bc umile to rotate while the beatwhile the cream-holders remain inoperative, or both the cream-holders and the beaters may be rotated et the same time in opposite directions, substantially es described.

of gearing for transmitting the motion of the vertical drving-shait G to the cream-holders and beaters, of a locking-device for each, substantially as described.

' e. Forming the interior of the ice-tankso that its sur face shall be approximately concentric to theexterior of sgroup of cream-holders, substantially as described., 5. Mounting the ice-tank and'contents upon a ons?5 riego moving on rails, in combination. with stationary driving-mechanism nneratihg substantially as de scribed.-

bination, withan ice-tank mounted on a. carriage, substantially as described.

side of the beater-shaft, and curved partially around said shaft, parallel to its axis, whenso constructed and applied that a i'ree passage for the cream is left between lts edge and the walls of the 'cream-holder, substantially as described.

day of June, 1868.

Executed at Boston, this JAMES DOOLING.

Witnesses:

Wit W. Lemmens, y N. O. Lomnnmi.

ers remain inoperative, lor the beaters may be rota-ted 3.. The combination, with the tiro separa trains 6. The guides Z Z and the luchtig-bolt Y, in oom- T. The central beater-wings hla, attached to either- 

